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(No Model.) 2 Sheets-Sheet 1.

R S. ANGELL.

v TRACTION ENGINE.

No. 314,285. Patented Mar. 24,1885.

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WITNESSES: INVENTOR. 424 f z ATTORNEYS.

(No Model.) 1 2 SheetsSheet 2.

R. s. ANGBLL.

TRACTION ENGINE.

Patented Mar. 24, 1885.

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RANSOM S. ANGELL, OF MOORHEAD, MINN., ASSIGNOR OF ONE-HALF TO MAR-SHALL A. SPOONER AND FRANK I). LARRABEE, ()F SAME PLACE.

TRACTION-ENGINE.

SPECIFICATION forming part of Letters Patent 1510314 285, dated IMarcll 24,1885.

Application filed July 1, 1894. (No model.)

To all whom it may concern: I bed, to bring said shaft near the ground, and Be it known that I, RANSOM S. ANGELL, a it has 011 its center a gear-wheel, D, and at its citizen of the United States, residing at Moorends are journaled the geared drive-wheels E, head, in the county of Clay and State of Minwhich are hung on thelower ends of T-shaped 5 nesota, have invented certain new and useful frames F, consisting of the vertical barf and Improvements in Traction-Engines; and I do the cross-bar f, and mesh into the teeth of the declare the following to be a full, clear, and circular racks G, which are secured to the inexact description of the invention, such as side ofthe rims or treadsH, ormay becast intewill enable others skilled in the art to which gral therewith. The rack Gis flanged on each lo it appertains to make and use the same, referside to receive and hold the drive-wheel Eand ence being had to the accompanying drawings, the friction-rollers I, the latterbeing secured to and to the letters and figures of reference the upper arm of the frame F, as the wheel E marked thereon,which form a partofthis speciis to its lower arm or standard, by a short shaft. fication. The main or rear wheels K, which are open 6;, 15 My invention relates to improvements in metallic rims of broad tread, have within the tractionengines or road-engines designed to metallic circular rack G, and they have no draw loads on ordinary roads, or prairie gangconnection with the axleB except through plows, or for analogous uses, and is intended the drive-wheels E and friction-rollers I on as an improvement upon the engine patented the frame F. 7 20 to me August 14, 1883, No. 282,944. In an opening in the bed of the machine It also relates more particularly to the deimmediately above the axle B is journaled a vice for communicating motion from the enshort shaft, a, which carries a small geargine to the drive-wheels, and to an improved wheel, (7, which engages with the gear-wheel method of constructing the forward or steel D on the axle B. On this shaft a is also a 25 ing wheels and steering device, as willhereinsprocket-wheel, c, from which a chain, h,

after more fully appear in the specification passes to anether sprocketwheel on a crossand be pointed out in the claims. shaft, 00, on the engine, connected directly In my former patent above mentioned I did with the piston-rod. not describe anyspecific engine or boiler, but The engine, which is the ordinary bed- 3o claimed that any suitable one could be inoiintengine, is mounted on the carriage-bed mided on the carriage-bed of my device. In the way between the wheels, and the chain h present instance I will describe the attach extends from the cross-shaft ac to the wheel 0 ments of the propelling mechanism with the on the shaft (1, or the engine and boiler may drive-wheels bywhich my engine is propelled. be mounted on feet secured to the carriage- 5 5 In the accompanying drawings, Figure 1 is bed.

a plan view of my engine. Fig. 2 is a sec- From the inside of the upper bar, f, of the d tional view of the forward wheels, the steerframe Fa rod, f", extends down and is secured ing device, and its connections. Fig. 3 shows to a tumhlingblock, e, on the axle B, near the the connection of the propelling mechanism wheel E, and a stop pin or rod, L, attached 9 0 with the drive-wheels. Fig. 4 is a section of to the carriage-bed, hooks over the rod f one of the forward or steering wheels; and and when an obstruction is met the revolution Fig. 5 is a detail view of the frame with the of the main wheel H is stopped and the wheel friction-rollers, drive-wheel, and tumbling E climbs up the rack until it attains the height block. of the obstruction, when the. wheel II will be 5 A A is the carriage bed or frame on which lifted over the same and recommence its revthe propelling mechanism is mounted, and Bis olution. the shaft or axle of the rear or drive wheels, In backing the engine the stop-pin L prewhich is placed below the bed, and G is the vents the forward motion of the frame F, axle of thefront or steering wheels, located which centers the wheel H as if it had a I00 50 upon or overthe bed. The shaftB is carried hub. The rod f also serves to additionally in bearings secured to the under side of the strengthen and brace the frame F.

The wheel H is an endless self-laying track for the drive-\vheel E to run on, and at the same time supports the rear end of the carriage-bed, while the frame F, with the drivewheel E and friction-rollers 1, serves as a hub to said main wheel or tread H in its revolu tion round the axle B. The motion of each wheel H is independent, though on level or unobstructed ground they will move regularly together.

The steering device consists of a turning post or stem, 0, passing through a bolster mounted on the forward axle, O, and having on the lower end of said turning-post a double pulley, 0, contained in a pivoted block, round which pulley pass two wire cables, 0, the ends of which are secured to the semicircular hubs of the guide or forward wheels. These guidewheels P consist of a solid rim, 1), connected with an inner rim, 1), by arms or spokes 19 This is all of these wheels which revolve. Their attachment to the axle C is as follows: The inner rim, 1), is provided with a semicircular hub, R, round which the wheel P revolves. From this semicircular hub rises a stem, 1%,which passes through a vertical opening in the end of the axle (l, allowing the axle to rise and fall on the stem in the upper open half-space of the inner rim,p. At the top of the stem R is a pin, 1', extending up to and into a chuck or rider, 8, which clasps the sides of the inner rim, 1), and holds the wheel steady at the top. Thus the axle G has a vertical motion on the stem It, and as it rests on the pivoted block V, which carries the double pulley 0, it has also an oscillating motion on this block V, regulated and controlled by the guides S and the bolsterTand braces 25. The

axle O has on each side, near the wheels, guide ways S, arranged to receive between them guides S, attached to the carriage-bed,which, with its vertical motion on the stem R, allow the axle to rise and fall when crossing inequalities of the ground. A slotted bolster, T, rests on the center of the axle, and is supported at l its ends by braces t, attached to the carriage bed in front and rear of the axle, and these braces also serve to connect the axle O with the carriage-bed. An elongated slot, to, in the bolster permits the passage of the tu rning'post O, which also passes through the axle and into the pulley, and has at top a wheel or equivalent means for turning. Each wire cable 0 is connected at one end to the inside of the front of one of the semicircular hubs of a wheel, P, then passes round one of the sheaves of the double pulley O, at the foot of the stem 0, and back to the rear of the hub, where it is secured.

It is obvious that turning the stem 0 to right or left will change the direction of both guide-wheels 1? simultaneously.

It is designed to employ lifting-springs on the main wheels of my engine-such as are made the subjectmatter of another application for patent by me now pending.

Having thus fully described my invention, what I claim therein as new, and desire to secure by Letters Patent, is

the forward axle, O, the wheels 1, the turningpost 0, the double pulley O, the wire cables 0, the braces t, and the slotted bolster '1, all as described.

the main shaft or axle B, the tumbling blocks 0, the stoprod L, and thehooked rod fflwith the drive-wheels E, and the carriage bed or frame, as described.

the main axle B, the tumbling blocks 6, stop pin or rod L, hooked rodf the frame F, carrying the drive-wheel and friction-rollers, and the endless track or tread, all as described.

In testimony whereof I affix my signature in presence of two witnesses.

RANSOM S. ANGELL. XVitnesses:

G. A. HENDRICKS,

H. O. \VALsH.

1. In a tractionengine, the combination of 2. In a traction-engine, the combination of 3. In a traction-engine, the combination of 

